Evaluation of fatigue, load and the quality of chest compressions by bystanders in hot and humid environments
Background: This study aimed to investigate the physiological load on bystanders during cardiopulmonary resuscitation (CPR) and the quality of chest compressions in hot and humid environments. Methods: This prospective experimental study compared the physical load and quality of chest compressions a...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Resuscitation Plus |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666520424002698 |
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| author | Haruka Takahashi Kensuke Suzuki Yohei Okada Satoshi Harada Hiroyuki Yokota Marcus Eng Hock Ong Satoo Ogawa |
| author_facet | Haruka Takahashi Kensuke Suzuki Yohei Okada Satoshi Harada Hiroyuki Yokota Marcus Eng Hock Ong Satoo Ogawa |
| author_sort | Haruka Takahashi |
| collection | DOAJ |
| description | Background: This study aimed to investigate the physiological load on bystanders during cardiopulmonary resuscitation (CPR) and the quality of chest compressions in hot and humid environments. Methods: This prospective experimental study compared the physical load and quality of chest compressions among healthy volunteers who performed 10 min chest compression in a climate chamber under normal conditions (for Tokyo) (Wet Bulb Globe Temperature [WBGT] 21 °C) and hot and humid conditions (WBGT 31 °C). The primary outcome was the depth of chest compressions over a 10-minute period. Secondary outcomes included the volunteer’s heart rate (HR), core body temperature (BT), Borg scale for assessing fatigue, and blood lactate levels. Data were analyzed using two-way repeated measures analysis of variance (ANOVA) and paired t-tests. Results: Out of 31 participants, 29 participants (mean [SD] age: 21[0.7], male: 21 [70.5 %]) were included in the analysis. For WBGT 21 °C and 31 °C, the mean chest compression depth at 10 min was not statistically difference (the depth of chest compression: 52.2 mm and 51.5 mm (p = 0.52)). At 10 min, heart rate and core temperature were 126 vs. 143 bpm, and 37.4℃ vs. 37.5℃ for WBGT 21℃ vs. WBGT 31℃ (mean differences: 17 bpm [95 % CI: 7.7–26.3], 0.1℃ [95 % CI: −0.1–0.3]). At the end, Borg scale was 16 vs. 18 and lactate levels were 3.9 vs. 5.1 mmol/L (mean differences: 2 [95 % CI: 1–3], 1.2 mmol/L [95 % CI: 0.1–2.3]). Conclusion: there was no significant difference in the depth of chest compression of paramedic students under the conditions between WBGT 31℃ and WBGT 21℃. For secondary outcomes, the lactate and fatigue of bystanders increased under WBGT 31℃ compared to WBGT 21℃. Further research is needed on CPR in hot and humid environments. |
| format | Article |
| id | doaj-art-15e2204adacf43ad8e9e1f9ff12c0835 |
| institution | Kabale University |
| issn | 2666-5204 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Resuscitation Plus |
| spelling | doaj-art-15e2204adacf43ad8e9e1f9ff12c08352024-12-21T04:29:57ZengElsevierResuscitation Plus2666-52042024-12-0120100818Evaluation of fatigue, load and the quality of chest compressions by bystanders in hot and humid environmentsHaruka Takahashi0Kensuke Suzuki1Yohei Okada2Satoshi Harada3Hiroyuki Yokota4Marcus Eng Hock Ong5Satoo Ogawa6The Graduate School of Medical & Health Science, Nippon Sport Science University, Japan; Health Services and System Research, Duke-NUS Medical School, National University of Singapore, SingaporeThe Graduate School of Medical & Health Science, Nippon Sport Science University, Japan; Corresponding author at: The Graduate School of Medical & Health Science, Nippon Sport Science University, 1221-1 Kamoshidatyo, Aoba-ku, Yokohama-shi, Kanagawa 227-0033, Japan.Department of Preventive Service, Kyoto University Graduate School of Medicine, Japan; Health Services and System Research, Duke-NUS Medical School, National University of Singapore, SingaporeThe Graduate School of Medical & Health Science, Nippon Sport Science University, JapanThe Graduate School of Medical & Health Science, Nippon Sport Science University, JapanHealth Services and System Research, Duke-NUS Medical School, National University of Singapore, SingaporeThe Graduate School of Medical & Health Science, Nippon Sport Science University, JapanBackground: This study aimed to investigate the physiological load on bystanders during cardiopulmonary resuscitation (CPR) and the quality of chest compressions in hot and humid environments. Methods: This prospective experimental study compared the physical load and quality of chest compressions among healthy volunteers who performed 10 min chest compression in a climate chamber under normal conditions (for Tokyo) (Wet Bulb Globe Temperature [WBGT] 21 °C) and hot and humid conditions (WBGT 31 °C). The primary outcome was the depth of chest compressions over a 10-minute period. Secondary outcomes included the volunteer’s heart rate (HR), core body temperature (BT), Borg scale for assessing fatigue, and blood lactate levels. Data were analyzed using two-way repeated measures analysis of variance (ANOVA) and paired t-tests. Results: Out of 31 participants, 29 participants (mean [SD] age: 21[0.7], male: 21 [70.5 %]) were included in the analysis. For WBGT 21 °C and 31 °C, the mean chest compression depth at 10 min was not statistically difference (the depth of chest compression: 52.2 mm and 51.5 mm (p = 0.52)). At 10 min, heart rate and core temperature were 126 vs. 143 bpm, and 37.4℃ vs. 37.5℃ for WBGT 21℃ vs. WBGT 31℃ (mean differences: 17 bpm [95 % CI: 7.7–26.3], 0.1℃ [95 % CI: −0.1–0.3]). At the end, Borg scale was 16 vs. 18 and lactate levels were 3.9 vs. 5.1 mmol/L (mean differences: 2 [95 % CI: 1–3], 1.2 mmol/L [95 % CI: 0.1–2.3]). Conclusion: there was no significant difference in the depth of chest compression of paramedic students under the conditions between WBGT 31℃ and WBGT 21℃. For secondary outcomes, the lactate and fatigue of bystanders increased under WBGT 31℃ compared to WBGT 21℃. Further research is needed on CPR in hot and humid environments.http://www.sciencedirect.com/science/article/pii/S2666520424002698Bystander CPRPhysiological loadHot TemperatureFatigueHeat-related illness |
| spellingShingle | Haruka Takahashi Kensuke Suzuki Yohei Okada Satoshi Harada Hiroyuki Yokota Marcus Eng Hock Ong Satoo Ogawa Evaluation of fatigue, load and the quality of chest compressions by bystanders in hot and humid environments Resuscitation Plus Bystander CPR Physiological load Hot Temperature Fatigue Heat-related illness |
| title | Evaluation of fatigue, load and the quality of chest compressions by bystanders in hot and humid environments |
| title_full | Evaluation of fatigue, load and the quality of chest compressions by bystanders in hot and humid environments |
| title_fullStr | Evaluation of fatigue, load and the quality of chest compressions by bystanders in hot and humid environments |
| title_full_unstemmed | Evaluation of fatigue, load and the quality of chest compressions by bystanders in hot and humid environments |
| title_short | Evaluation of fatigue, load and the quality of chest compressions by bystanders in hot and humid environments |
| title_sort | evaluation of fatigue load and the quality of chest compressions by bystanders in hot and humid environments |
| topic | Bystander CPR Physiological load Hot Temperature Fatigue Heat-related illness |
| url | http://www.sciencedirect.com/science/article/pii/S2666520424002698 |
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